This Acme Market was on the east side of the Bethlehem-Nazareth Pike (Rte 191), just south of Nazareth. Part of the track for the former Nazareth Speedway is shown at bottom left. The supermarket has been demolished.

I beg to differ - the track was never that close to 191 - if you look on Google Earth, you can see that the turns are at the North and South end of the track - the front stretch parallels 191 and is significantly further away. I think this property is the vacant area just to the south of the track - there is an asphalt pad there but you can see what looks like the outline of the former foundation and the location of the treelines match.

I think that this is the smaller dirt track that is where Giant currently is. That would mean that this is 191.

I found a photo of the race track in the 80s I want to say and you can see the dirt track (where Giant is now). It is quite hard to see but you can make out the shape of the building that was ACME as it was in this photo. This is now the small shopping center that has Pinos and service master.

I did not add to my previous comment but the road in the upper left would be Jandy Blvd